Watch strap



FIG. 1 is a perspective view of a watch strap showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a first end view thereof; and,

FIG. 7 is a second end view thereof.

The broken lines are for the purpose of showing environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for a watch strap, as shown and described. 